I'm allmost there :laugh:
The PNGs that are in question is:
phone_btn_in_call_main_disable.9.png
phone_btn_in_call_main_disable_focused.9.png
phone_btn_in_call_main_normal.9.png
phone_btn_in_call_main_pressed.9.png
phone_btn_in_call_main_selected.9.png
They draws the 3 top buttons. If you look inside other themes, the filenames will have similar names (maybe start or end differently).
The lower 3 buttons are drawn by 10 .9.png: phone_btn_in_call_switch_ .9.png
The black line/dots in the .9.png has to be ajusted a little to make the smooth transition of button-backgrounds. Also i'm not satisfied with buttons so close to text (phone number) yet :angel:
For comparrison see screenshots below. If you draw horiziontal lines, you will notice caller-image is a little higher on the system-default.
Left = before
Middle = now (work in progress)
Right = system (no theme)
Just for the sake of it, i will make a step by step, with screen shots etc. of the fix-process - just to put some fuel on all you newbies who want to join in and make something of your own. You don't need special image editing skills or tools, but you need a clear head, LOL